The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 15, 1986
Filed:
Mar. 18, 1985
George Obermann, Niles, IL (US);
Lui M Lee, Melrose Park, IL (US);
Controls Company of America, Schiller Park, IL (US);
Abstract
A pressure switch and transducer arrangement combines into a single unit both a power contact switch for providing power to an automobile fuel pump in response to a predetermined minimum oil pressure and a magnet/Hall effect sensor for providing an analog signal indicative of the oil pressure for use by the automobile on-board microcomputer. The arrangement includes an actuator rod movable by a diaphragm in response to oil pressure. The end of the rod remote from the diaphragm is coupled to a contact washer for providing the power switching function and also to a magnet which cooperates with a fixed Hall effect sensor, which sensor provides an output corresponding to the air gap between the magnet and the sensor. The magnet and the washer are coupled to the actuator rod in such a manner that even after the washer makes contact with the power switching terminals, the actuator rod and magnet are free to continue moving as the oil pressure continues to increase.